package day07;

public class PrimeNuber {
    public static void main(String[] args) {
        for (int num=2;num<100;num++){
        boolean flag=true;
        for (int i=2;i<=num/2;i++){
            if (num%i==0){
                flag=false;
                break;
            }
        }

        if (flag){
            System.out.println(num+"是素数");
        }else {
            System.out.println(num+"不是素数 ");
        }
    }}
}
